Variable Frequency Drives & Digital Phase Converters

3LH Series, Low Harmonic, Three-Phase VFD's

3LH Series VFD’s utilize active front end (AFE) technology to comply with low harmonic standards, regenerate power back on the grid, and control unbalanced three-phase loads without oversizing the VFD.

3LH Series drives have a unique active switching input module that limits harmonic distortion of the power input. These drives are IEEE 519 compliant with no additional harmonic filters required. The active front end also provides the added benefit of power conditioning for the VFD.  This ensures the motor is supplied with proper voltage.

An optional voltage doubling 3LH Series drive utilizes a three-phase active front end to boost the 208/240V input and generate 460V three-phase output. This innovative capability eliminates the cost of a transformer and provides significant cost reduction in submersible or long lead applications by reducing the size of motor cables.  Phase Technologies now manufactures optional sine wave filters providing them at a fraction of the cost of third party suppliers, further reducing expenses associated with long lead installations.

  • IEEE 519 Compliant Guaranteed*
  • 20 - 450HP
  • Performance & Signature Series
  • Active Frontend Technology
  • Easy Setup with Perfect Pressure™
  • NEMA Type 3R Rated Outdoor Enclosures

 

3LHS Signature Series

Signature Series

208-240V Three-Phase Input VFD
460V Three-Phase VFD
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Typical Applications

Irrigation Pumping
Motor Control
Soft Starting


 

3LH Performance Series

Performance Series

460V Three-Phase VFD
Get More Detailed Specifications

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Typical Applications

Irrigation Pumping
Municipal Water Systems
Soft Starting

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